Characters speaking to themselves and/or speaking the obvious (like : "Oh no! He's going to launch [some kind of energy attack]" when you can see the attack charging up), acting in a stupid way (what will happen if I attack this Fire Elemental with a Flamethrower? Oh noes! It's even more powerful now! Hey, look, there's a water tank over here.. No, it won't work), and too much mentions of the power of love/power of friendship (There's nothing wrong with using it, but claiming "Our love/friendship will defeat this monster/is the most powerful thing ever/[insert variation here] every single time something is up gets real old real fast)" tend to tick me off.